| Systemic lupus international collaborating clinics renal activity/response exercise: development of a renal activity score and renal response index. | |
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MedLine Citation:
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PMID: 18512819 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To develop a measure of renal activity in systemic lupus erythematosus and use it to develop a renal response index. METHODS: Abstracted data from the medical records of 215 patients with lupus nephritis were sent to 8 nephrologists and 29 rheumatologists for rating. Seven nephrologists and 22 rheumatologists completed the ratings. Each physician rated each patient visit with respect to renal disease activity (none, mild, moderate, or severe). Using the most commonly selected rating for each patient as the gold standard, stepwise regression modeling was performed to identify the variables most related to renal disease activity, and these variables were then used to create an activity score. This activity score could then be applied to 2 consecutive visits to define a renal response index. RESULTS: The renal activity score was computed as follows: proteinuria 0.5-1 gm/day (3 points), proteinuria 0.5-1 gm/day = 3 points, proteinuria >1-3 gm/day = 5 points, proteinuria >3 gm/day = 11 points, [corrected] urine red blood cell count > = 5/hpf = 3 points, [corrected] urine white blood cell count > or = 5/hpf = 1 point. [corrected] The chance-adjusted agreement between the renal response index derived from the activity score applied to the paired visits and the plurality physician response rating was 0.69 (95% confidence interval 0.59-0.79). CONCLUSION: Ratings derived from this index for rating of renal response showed reasonable agreement with physician ratings in a pilot study. The index will require further refinement, testing, and validation. A data-driven approach to create renal activity and renal response indices will be useful in both clinical care and research settings. |
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Authors:
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Michelle Petri; Nuntana Kasitanon; Shin-Seok Lee; Kimberly Link; Laurence Magder; Sang-Cheol Bae; John G Hanly; David A Isenberg; Ola Nived; Gunnar Sturfelt; Ronald van Vollenhoven; Daniel J Wallace; Graciela S Alarcón; Dwomoa Adu; Carmen Avila-Casado; Sasha R Bernatsky; Ian N Bruce; Ann E Clarke; Gabriel Contreras; Derek M Fine; Dafna D Gladman; Caroline Gordon; Kenneth C Kalunian; Michael P Madaio; Brad H Rovin; Jorge Sanchez-Guerrero; Kristjan Steinsson; Cynthia Aranow; James E Balow; Jill P Buyon; Ellen M Ginzler; Munther A Khamashta; Murray B Urowitz; Mary Anne Dooley; Joan T Merrill; Rosalind Ramsey-Goldman; Josef Font; James Tumlin; Thomas Stoll; Asad Zoma; |
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Publication Detail:
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Type: Journal Article; Multicenter Study; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Arthritis and rheumatism Volume: 58 ISSN: 0004-3591 ISO Abbreviation: Arthritis Rheum. Publication Date: 2008 Jun |
Date Detail:
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Created Date: 2008-06-19 Completed Date: 2008-07-24 Revised Date: 2010-08-30 |
Medline Journal Info:
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Nlm Unique ID: 0370605 Medline TA: Arthritis Rheum Country: United States |
Other Details:
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Languages: eng Pagination: 1784-8 Citation Subset: AIM; IM |
Affiliation:
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Department of Rheumatology, Johns Hopkins University, Baltimore, Maryland 21205, USA. mpetri@jhmi.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Humans Kidney / physiopathology* Lupus Erythematosus, Systemic / complications, physiopathology* Lupus Nephritis / diagnosis* Observer Variation Severity of Illness Index* |
| Grant Support | |
ID/Acronym/Agency:
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AR-43727/AR/NIAMS NIH HHS; K24 AR002138-07/AR/NIAMS NIH HHS; K24 AR002138-08/AR/NIAMS NIH HHS; M01-RR-00052/RR/NCRR NIH HHS |
| Comments/Corrections | |
Erratum In:
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Arthritis Rheum. 2008 Sep;58(9):2823 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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